baumann



C. J. BAUIVIANNlv FURNACE CONSTRUCTION.

APFucATloN man sEP.21. 1911.

Patented June 24, 1919.

2 SHEETS-SHEET l.

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INVENTOFII.

ATTORNEYS.

WITNESS CHRISTY J'. BAUMANN, OF PITTSBURGH, PENNSYLVANIA,

ASSIG-N OR TO MACBETI-I- EVANS GLASS COMPANY, `.A CORPORATION OFPENNSYLVANIA.

.FURNACE CONSTRUCTION.

Specification of Letters Patent.

Patented .rune 2.4i, raie.

Application led September 21, 1917. Serial No. 192,492.

- nace Constructions, of which the following approved type,

is a specification.

The invention relates to furnace construc-v tions. The invention isillustrated as applied to a glass furnace but is applicable toregenerator furnaces employed for other purposes. It has for its primaryobjects, the provision of an improved arrangement of air and gaspassages and ports, whereby (l) a better mixture of gas and air issecured than has been the case with the ordinary type of constructionnowin use, (2)I lwherein increased economy in fuel consumption issecured, and (3) wherein a better color in the glass produced issecured, (where the invention is used iii/ia glass furnace) due to thebetter combustion of carbon which would otherwise tend to give anobjectionable color to the glass. One embodiment of the inventionisillustrated in the accompanying drawings, wherein Figure l is atransverse section through a furnace having my improved arrangement ofports and passages; Fig. 2 is a section on the line II-II of Fig. l; andFig. 3 is a section on the line III- III of Fig. 1. The furnace l (Fig.l) may be of any the form illustrated being designed to contain a bodyof'molten glass, and being known as a glass melting furnace. Itiscustomary in furnaces of this kind to provide regenerator lmeans on the"opposite sides of the furnace and alternate the How of gas the furnace,a series of ports beingprovided along the sides of the furnace, only oneset of which are shown in the construction of Fig. 1. It will beunderstood that the ar rangements on the opposite sides of the furnaceare the same so Athat a description of one side will. serve for both.A

Referring, for the'purpose ofv description, to the construction at theright-hand side of the furnace, 2'and 3 are regenerator chambers filled.with the usual checker work, not shown, the regenerator 2` beingprovided with a gas admission passage of the usual type. 4When the-ow-of gas is from the 'Furnace to the regenerators 2 and 3, the

and air back and forth across l regenerator 2 is of coursey connected tothe outlet stack and the gas is cut off. The invention particularlyrelates t0 the arrangementl of ports and passages leading from theregenerators 2 and 3 to the furnace l.

The gas passage 4 is rectangular in cross section, as indicated in Figs.2 and 3, and terminates in a port 5 which is short of the furnace 1. Theair passage 6 from the regenerator 3 is also rectangular in\crosssection, as vindicated in Figs. 2 and 3,\`\and terminates at the port 7which constitutes the combined outlet port of both the gas and airpassage. It will be understood that the passages 4 and 5 may becross-sections other than rectangular, if desired.`

The air passage 6 entirely surrounds the gas passage 4 and has aninclined upper portion, as indicated at 8, such inclined upper portionserving to contract the area of the air passage adjacent the end'of thegas passage. The same general result could of course e secured byinclining some other part or parts of the surrounding wall so as to givewhat'may be termed a nozzle effect.

The result secured by the foregoing arrangement is to provide a thoroughmixing of the gas and air before the furnace is reached.

This gives a better combustion than the ar-v rangements heretoforeemployed, wherein one inlet passage was merely placed above the other.tirely surrounds the gas and the inclined upper wall 8 still furtherpromotes the mixture since the gas and air are forced togethery througha restricted passage. The more perfect combustion which results fromthis arrangement not only gives better economy in fuel consumption, vbutin the case of a glass furnace, tends to secure a better color in theglass of the furnace. Any unburned carbon tends to color the glass andthe improved combustion incident to the arrange.

ment of ports and passages practically eliminates any opportunity forsuch unconsumed carbon. Any carbon from the gas which is notcompletelyconsumed must fall through the ybody of air beneath, and th1sgives an opportunity for it to burn before it strikes the glass. Otheradvantages 1nc1- dent to the construction will be apparent to thoseskilled in the art.

What I claim is:

1. The combination with a furnace, the wall of which is provided with arestricted The body of incoming air en-' air and gas nozzle inlet, of apair of regenerating chambers disposed adjacently of said wall, a o*aspassage extending from one of said cham ers and provided wlth an outletprojecting inwardly toward and terminating short of said inlet, and anair conducting conduit leading from the other of said chambers to saidinlet and disposed about said gas conduit to surround its outlet, theaxes'of said outlet and inletl being located in dierent planes.

2. IThe combination with a furnace, the wall of which is provided with a'restricted air and gas nozzle inlet, of a-pair of regenerating chambersdisposed adj acently of said wall, a gas passage extending from one bersand connected with the wall of the fur-v nace about said inlet.

f3. rlhe combination with a furnace having a nozzle inlet, ofregenerating means therefor comprising 'adjacently disposed inner andouter chambers, a gas conduit extending upwardly from said inner chamberand provided with an outlet projecting in- "wardly toward and adjacentto said inlet,

and an air conducting conduit leading from the outer chamber anddisposed about said gas conduit, said last mentioned' conduit ter'-lminating at said'nozzle inlet and in advance of said outlet, the axis ofsaid outlet being substantially co-incident with the top-line'of saidinlet.

4. In .combination with a furnace provided with an inlet passage, of apair of associated regenerating chambers, an air admission passageleading from one of said chambers and having its outlet end provided.with a wall portion downwardly inclined whereby to restrict said inletpassage, and a gas conducting conduit extending from the other of saidchambers and having its outlet end disposed in the outlet end of saidair admission passage and confronting said downwardly inclined wallportion, the body of said' conduit lying in the said airadmissubstantially as described.

sion passage,

` CHRISTY J. BAUMANN.

